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SQL Reference
SQL Reference : OpenEdge SQL Language Elements : Data types : Literals
 
Literals
A literal, also called a constant, is a type of expression that specifies a constant value. Generally, you can specify a literal wherever SQL syntax allows an expression. Some SQL constructs allow literals but disallow other forms of expressions.
There are three types of literals:
*NUMERIC
*CHARACTER-STRING
*DATE-TIME
The following sections discuss each type of literal.
* Numeric literals
* Character-string literals
* Date-time literals